Comments on: Data Logger http://www.eightlines.com/blog/2008/08/data-logger/ Experiments in Physical Computing Tue, 06 Jan 2009 02:55:59 +0000 http://wordpress.org/?v=abc hourly 1 By: Eightlines Creations › Data Logging to the Arduino EEPROM http://www.eightlines.com/blog/2008/08/data-logger/comment-page-1/#comment-20 Eightlines Creations › Data Logging to the Arduino EEPROM Sun, 07 Sep 2008 18:14:36 +0000 http://www.eightlines.com/blog/?p=30#comment-20 [...] in the right position you wouldn’t pick up the digital I/O change. The solution, offered by Blalor, was to use the Arduino Interrupt commands. The Interrupt fires whenever a digital I/O signal is [...] […] in the right position you wouldn’t pick up the digital I/O change. The solution, offered by Blalor, was to use the Arduino Interrupt commands. The Interrupt fires whenever a digital I/O signal is […]

]]> By: Brent http://www.eightlines.com/blog/2008/08/data-logger/comment-page-1/#comment-19 Brent Sun, 31 Aug 2008 17:24:56 +0000 http://www.eightlines.com/blog/?p=30#comment-19 Thanks Blalor, that pointed me in the right direction. Replaced: if (digitalRead(pinHall) == HIGH) checkReading(); With: attachInterrupt(1, incrementRPM, FALLING); And "int rpm" with "volatile int rpm" Seems to be working perfectly now. Thanks Blalor, that pointed me in the right direction.

Replaced: if (digitalRead(pinHall) == HIGH) checkReading();

With: attachInterrupt(1, incrementRPM, FALLING);

And “int rpm” with “volatile int rpm”

Seems to be working perfectly now.

]]> By: blalor http://www.eightlines.com/blog/2008/08/data-logger/comment-page-1/#comment-18 blalor Fri, 29 Aug 2008 10:35:27 +0000 http://www.eightlines.com/blog/?p=30#comment-18 I think I would try an interrupt-driven approach, personally. Seems to me that if the RPM is sufficiently high, you'll miss the high state. I think I would try an interrupt-driven approach, personally. Seems to me that if the RPM is sufficiently high, you’ll miss the high state.

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